Population trends in a community of large Procellariiforms of Indian Ocean: Potential effects of environment and fisheries interactions
International audience Despite the worrying conservation status of several albatross and petrel population, the long-term trends of many populations remain largely unknown and the causes of decline in many cases are known or very strongly suspected to be incidental mortality in fisheries. Here we co...
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ftunivnantes:oai:HAL:hal-00310167v1 2023-05-15T13:51:43+02:00 Population trends in a community of large Procellariiforms of Indian Ocean: Potential effects of environment and fisheries interactions Delord, Karine Besson, Dominique Barbraud, Christophe Weimerskirch, Henri Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) 2008-08-08 https://hal.science/hal-00310167 https://doi.org/10.1016/j.biocon.2008.05.001 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.biocon.2008.05.001 hal-00310167 https://hal.science/hal-00310167 doi:10.1016/j.biocon.2008.05.001 ISSN: 0006-3207 Biological Conservation https://hal.science/hal-00310167 Biological Conservation, 2008, 141, pp.1840-1856. ⟨10.1016/j.biocon.2008.05.001⟩ Trends analysis Crozet Seabird monitoring Breeding success Fisheries-related mortality Conservation status [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2008 ftunivnantes https://doi.org/10.1016/j.biocon.2008.05.001 2023-02-08T04:57:49Z International audience Despite the worrying conservation status of several albatross and petrel population, the long-term trends of many populations remain largely unknown and the causes of decline in many cases are known or very strongly suspected to be incidental mortality in fisheries. Here we combine long-term monitoring of population trends, breeding success and band recoveries to examine the past and current status of five species of albatrosses and giant petrels breeding at the same site: sooty albatross (Phoebetria fusca), light-mantled albatross (Phoebetria palpebrata), wandering albatross (Diomedea exulans), northern giant (Macronectes halli) and southern giant petrels (Macronectes giganteus) on Possession Island, Crozet archipelago. We identified three groups of trends over a 25-years period (1980–2005) suggesting common underlying causes for these species in relation to their bioclimatic foraging ranges. The Antarctic species – light-mantled albatross and southern giant petrel – appeared stable and increased recently, the Sub-Antarctic species – wandering albatross and northern giant petrel – declined with intermediate periods of increase, and finally the subtropical species – sooty albatross – declined all over the period. Breeding success, indicative of environmental conditions, showed two kinds of pattern (low and fluctuating versus high and/or increasing) which were consistent with oceanographic variations as found in a previous study. We present the analysis of fisheries-related recoveries, indicative of fisheries bycatch risks showing specific catch rates. No direct relationship between population trends and longline fishing effort was detected, probably because census data alone are not sufficient to capture the potentially complex response of demographic parameters of different life stages to environmental variation. This study highlights the contrasted changes of procellariiform species and the particularly worrying status of the subtropical sooty albatrosses, and in a lesser extent of ... Article in Journal/Newspaper Antarc* Antarctic Diomedea exulans Giant Petrel Giant Petrels Macronectes giganteus Possession Island Wandering Albatross Université de Nantes: HAL-UNIV-NANTES Antarctic The Antarctic Indian Giganteus ENVELOPE(62.500,62.500,-67.567,-67.567) Possession Island ENVELOPE(171.200,171.200,-71.867,-71.867) Biological Conservation 141 7 1840 1856 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Trends analysis Crozet Seabird monitoring Breeding success Fisheries-related mortality Conservation status [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
Trends analysis Crozet Seabird monitoring Breeding success Fisheries-related mortality Conservation status [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society [SDE.MCG]Environmental Sciences/Global Changes Delord, Karine Besson, Dominique Barbraud, Christophe Weimerskirch, Henri Population trends in a community of large Procellariiforms of Indian Ocean: Potential effects of environment and fisheries interactions |
topic_facet |
Trends analysis Crozet Seabird monitoring Breeding success Fisheries-related mortality Conservation status [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience Despite the worrying conservation status of several albatross and petrel population, the long-term trends of many populations remain largely unknown and the causes of decline in many cases are known or very strongly suspected to be incidental mortality in fisheries. Here we combine long-term monitoring of population trends, breeding success and band recoveries to examine the past and current status of five species of albatrosses and giant petrels breeding at the same site: sooty albatross (Phoebetria fusca), light-mantled albatross (Phoebetria palpebrata), wandering albatross (Diomedea exulans), northern giant (Macronectes halli) and southern giant petrels (Macronectes giganteus) on Possession Island, Crozet archipelago. We identified three groups of trends over a 25-years period (1980–2005) suggesting common underlying causes for these species in relation to their bioclimatic foraging ranges. The Antarctic species – light-mantled albatross and southern giant petrel – appeared stable and increased recently, the Sub-Antarctic species – wandering albatross and northern giant petrel – declined with intermediate periods of increase, and finally the subtropical species – sooty albatross – declined all over the period. Breeding success, indicative of environmental conditions, showed two kinds of pattern (low and fluctuating versus high and/or increasing) which were consistent with oceanographic variations as found in a previous study. We present the analysis of fisheries-related recoveries, indicative of fisheries bycatch risks showing specific catch rates. No direct relationship between population trends and longline fishing effort was detected, probably because census data alone are not sufficient to capture the potentially complex response of demographic parameters of different life stages to environmental variation. This study highlights the contrasted changes of procellariiform species and the particularly worrying status of the subtropical sooty albatrosses, and in a lesser extent of ... |
author2 |
Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Delord, Karine Besson, Dominique Barbraud, Christophe Weimerskirch, Henri |
author_facet |
Delord, Karine Besson, Dominique Barbraud, Christophe Weimerskirch, Henri |
author_sort |
Delord, Karine |
title |
Population trends in a community of large Procellariiforms of Indian Ocean: Potential effects of environment and fisheries interactions |
title_short |
Population trends in a community of large Procellariiforms of Indian Ocean: Potential effects of environment and fisheries interactions |
title_full |
Population trends in a community of large Procellariiforms of Indian Ocean: Potential effects of environment and fisheries interactions |
title_fullStr |
Population trends in a community of large Procellariiforms of Indian Ocean: Potential effects of environment and fisheries interactions |
title_full_unstemmed |
Population trends in a community of large Procellariiforms of Indian Ocean: Potential effects of environment and fisheries interactions |
title_sort |
population trends in a community of large procellariiforms of indian ocean: potential effects of environment and fisheries interactions |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.science/hal-00310167 https://doi.org/10.1016/j.biocon.2008.05.001 |
long_lat |
ENVELOPE(62.500,62.500,-67.567,-67.567) ENVELOPE(171.200,171.200,-71.867,-71.867) |
geographic |
Antarctic The Antarctic Indian Giganteus Possession Island |
geographic_facet |
Antarctic The Antarctic Indian Giganteus Possession Island |
genre |
Antarc* Antarctic Diomedea exulans Giant Petrel Giant Petrels Macronectes giganteus Possession Island Wandering Albatross |
genre_facet |
Antarc* Antarctic Diomedea exulans Giant Petrel Giant Petrels Macronectes giganteus Possession Island Wandering Albatross |
op_source |
ISSN: 0006-3207 Biological Conservation https://hal.science/hal-00310167 Biological Conservation, 2008, 141, pp.1840-1856. ⟨10.1016/j.biocon.2008.05.001⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.biocon.2008.05.001 hal-00310167 https://hal.science/hal-00310167 doi:10.1016/j.biocon.2008.05.001 |
op_doi |
https://doi.org/10.1016/j.biocon.2008.05.001 |
container_title |
Biological Conservation |
container_volume |
141 |
container_issue |
7 |
container_start_page |
1840 |
op_container_end_page |
1856 |
_version_ |
1766255759916531712 |